Improved cork-screw



UNITED STATES ATEN EEICE.

JOSEPH LINUS CLARK, CF CHESTER, CONNECTICUT.

lMPROV'ED @GWK-SCREW.

Specification forming part of Letters Patent No. dbil 37., dated November 22, 1864.

To all whom it may concern Be it known that I, JOSEPH LINUS CLARK, of Chester, in the county of Middlesex and State of Connecticut, have invented a new and Improved Cork-Screw for Drawing Corks from Bottles 5 and. I do hereby -declare that the following is a full and exact description thereof', reference being had to the accompan yin g drawings, and to the letters of ret'erence marked thereon, in which- Figure l represents an external side view ot' the screw and a sectional port-ion of the handle cut vertically through the center, showing the internal arrangement and the connection; Fig. 2, a perspective view of the metal center in the handle, and Fig. 3 a perspective view of the metal ring which protects the wood in the handle below the attaching 1m.

rIhe nature of my invention consists in con structing cork-screws, the screw of which 'when pressed into a cork will revolve through it by pressure alone, without turning the handle, by means of a more pitching or beveling thread than is now used, made sharp or thin upon the edge, and providing the shank with a center, and so attaching it in the handle by a pin passing through it within the handle that it shall rise up and meet a corresponding center in the handle and easily revolve when ,the screw is pressed into a cork, but tall back and be obstructed in revolution by the contact Ot' the attaching-pin with a pin or catch provided within the handle when the operation is in the opposite direction.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

I construct my screws of steel in the form known as the convex twist,77 but to avoid the slow process of turning them into a cork by the handle, I give an increased pitch to the thread, as shown at A, Fig. 1, and make it sharp or very thin upon the edge. Upon the top Ot' the shank I form a convex center, as Shown at c, and drill a hole through the shank a little below it, to receive the pin represented at I.

I turn my handles in the form represented at H H when I make them of wood, boring the hole to admit the shank sutliciently large to allow the shank to move up and down and revolve easily, and enlarge it near the top to allow the t'ree play OI" the pin P, as shown at o o, protecting the wood at the bottom of this enlargement by a cloSely-tting metal ring, which is represented at n. This ring has a notch on one side and is clearly represented by Fig. 3. I drive a pin or catch firmly into the wood, entering it at the notch in the ring, and allow the top to rise above the ring, as represented at K. I also make a still greater enlargement of the hole atthe top, to form a support for the metal center (shown at c, and clearly represented by Fig. 2,) and Acut a thread in it, as shown at t t, to receive the screw. tepresentedat S.) Iattach the screw to the handle by entering the shank at the small end of the handle and passing it through, until above the larger end the hole in the shank appears, into which I drive the pin I?, and, letting the shank t'all back into the handle, insert the met-al center c and secure it with the screw S.

The operation is as follows: The point of the screw being pressed into a cork, the piu l) rises above the catch K, and the center c meets the corresponding center c', and the greatpitch ot' the thread causes the screw to revolve rapidly through the cork; but when pulling upon the cork-the pin IJ falls back upon the ring n and revolution is stopped by the catch K.

I do not claim the convex twist, neither do l claim the particular form of handle described, well aware the handles may be made wholly ot' metal, or a combination of met-al and wood, and ot' a variety of patterns 5 but Iliat I do claim as new and my invention, and desire to secure by Letters Patent, is-

rlhe increased pitch ofthe thread when used for the purpose herein described, and Operating in combination with the pin P and catch K, or their equivalents.

JOSEPH LINUS CLARK,

Iitnesses: A. HAMILTON GILBERT,

NELSON B. GILBERT. 

